So this is my controller function.
def fb_close
current_user.update_user_points(SHARE_POINT_ONE, message, current_user.id, 0) if params[:post_id].present?
respond_to do |format|
format.js { render :js => "my_function();" }
end
end
and im trying to go back a js function called my_function inside script tag on the same page. I'm getting an error like ActionController::UnknownFormat
I want to know where i was wrong. Please correct me.
I have a file named fb_close.html.erb i can get the call to that file.. Is there any way i can link it with a js function
You should be better putting the code of my_function in a separate file of format js and call it like format.js { render 'your_file_name' }
respond_to do |format|
format.js { render 'your_file_name' }
end
You have to create a file like fb_close.js.erb and put the code of my_function in it and call it like this
respond_to do |format|
format.js { render 'fb_close' }
end
Related
I’m Rails beginner and I’m a bit overwhelmed by the quite simple problem. I would like to do something like this:
Users fills in a form.
Taps on the submit button
Model is saved into database.
If the save operation was successful, execute a javascript.
The questions is: how to accomplish that in the best way possible in Rails 6? Should I use .js.erb files? Or should I have javascript put into webpacker?
I tried so far the following code, but without any success:
controller/jobs_controller.rb
def create
#job = current_user.jobs.build(job_params)
respond_to do |format|
if #job.save
format.html { redirect_to #job, notice: 'Success!' }
format.js {}
else
format.html { render :new }
format.json { render json: #job.errors, status: :unprocessable_entity }
end
end
end
views/jobs/create.js.erb
alert('hello');
As it was pointed out by #max-pleaner I was missing remote: true in the form tag.
So, I'm trying to respond to an action with a js file.
def my_schedule
respond_to do |format|
format.js
end
end
In my view, I have 'my_schedule.js.erb' but it's not even executed, rails broke in the controller and throw me an error : ActionController::UnknownFormat, where I have the respond_to.
I tried to add
respond_to :js, :json, :html
at the beginning of my controller out of the actions but still not working.
Need help to debug this and understand how respond_to really works.
format.js will only respond to an xhr request. You can't trigger this response by just navigating to the route that points to this controller and method.
You can test the js.erb execution by changing the respond_to block to
def my_schedule
respond_to do |format|
format.html
format.js
end
end
Then create a my_schedule.html.erb file in the same view folder as the js.erb with the following contents
<%= link_to 'Test', my_schedule_path, data: { remote: true } %>
Note that you may need to adjust that path, I'm just guessing on that.
Then navigate to the same path you were trying to before. You should see a link which, when clicked, will fire the js response.
I have controller Message_Controller and this Controller has method "message" in this method i wanna render .js.erb file i need call js function from rails controller.I need reneder it without html-template(layout) just only js-code in this code i will call js-function with args .How to make it ??
My routes:
post 'chat_bot/message', to: 'chat_bot#message'
My controller:
class ChatBotController < ApplicationController
layout false
def message
#gon.watch.message = params[:text]
#message = params[:text]
puts #message
render partial: 'message.js.erb', layout: false
end
end
my message.js.erb file
alert('<%=#message %>');
With
render partial: 'message.js.erb', layout: false
Rails is going to look for a partial called _message.js.erb right in the folder responding to that controller.
You can use respond_to and there specify the format and what to render:
def message
respond_to do |format|
format.html { render partial: 'message.js.erb' }
end
end
You can skip the instance variable assignation if you prefer, as you have access to the params within the request.
If your idea is to "evaluate" the alert, then it still should be inside a script tag:
<script>
alert("<%= params[:text] %>");
</script>
just update it with
def message
#message = params[:text]
respond_to do |format|
format.js
end
end
I'm making a simple AJAX call from a from_tag (search box) and want to show the results without refreshing page. The issue is that even though I can see in server console that the show action is being processed as JS, it still renders the HTML and not the js.haml file. The only way I'm getting controller to render js is by changing name to show.js . It then works as it should. show.js.erb doesn't work either. I've also tried format.js {render layout: false} without any luck. It seem to be an problem on the controller side but I might be wrong here. Any ideas appreciated!
Edit:
The controller action is working using the render "show.js.haml" option. The other issue is that escape_javascript doesn't do anything in below js.haml file.
show.js.haml
$("#main").html("#{escape_javascript(render 'artists/show', locals: {artist: #artist, updates, #updates, reach: #reach, reach_diff: #reach_diff})}");
controller
class ArtistsController < ApplicationController
def index
if params[:search]
#artist=Artist.find_by(name: params[:search])
redirect_to action: "show", id: #artist.id
else
#artists= Artist.all
end
end
def show
#artist= Artist.find(params[:id])
#updates = #artist.updates.order(created_at: :desc)
#reach = #artist.reachupdates.order(created_at: :desc)
#reach_diff= Reachupdate.last_week_diff(#artist.id)
respond_to do |format|
format.html
format.js {render "show.js.haml", layout: false}
end
end
end
You need to change render layout: false to render 'show.js.haml', layout: false
def show
#artist= Artist.find(params[:id])
#updates = #artist.updates.order(created_at: :desc)
#reach = #artist.reachupdates.order(created_at: :desc)
#reach_diff= Reachupdate.last_week_diff(#artist.id)
respond_to do |format|
format.html
format.js {render 'show.js.haml', layout: false}
end
end
Update:
The next issue I'm having is to insert ruby objects to the js file
If the file 'articles/show' is a partial file then the problem is the locals keyword should be used along with partial keyword in order to work. Try changing this
$("#main").html("#{escape_javascript(render 'artists/show', locals: {artist: #artist, updates, #updates, reach: #reach, reach_diff: #reach_diff})}");
to
$("#main").html("#{escape_javascript(render partial: 'artists/show', locals: {artist: #artist, updates, #updates, reach: #reach, reach_diff: #reach_diff})}");
Or
Just remove locals
$("#main").html("#{escape_javascript(render 'artists/show', artist: #artist, updates, #updates, reach: #reach, reach_diff: #reach_diff)}");
In the "Working With Javascript" section of the Rails Edge Guides, an example is given of how to structure a 'create' action inside a 'User' controller, in order to integrate AJAX into the creation action:
# app/controllers/users_controller.rb
# ......
def create
#user = User.new(params[:user])
respond_to do |format|
if #user.save
format.html { redirect_to #user, notice: 'User was successfully created.' }
format.js {}
format.json { render json: #user, status: :created, location: #user }
else
format.html { render action: "new" }
format.json { render json: #user.errors, status: :unprocessable_entity }
end
end
end
I've read here that both 'format.js' and 'format.json' are needed, because Javascript and JSON are different types of response. My question is, if both formats are specified in the first half of the 'create' action's if statement, why aren't both also needed in the 2nd half? Does this mean that Javascript uses the 'create.js.erb' file on success, but not on failure?
Yes, you are correct. Based on skimming the guide, it looks like you don't want to do anything with js in the case of failure. If you were to put
format.js {}
in the failure block as well, then it would try to execute the render #user portion, which would probably cause an error anyway.
If you really did want to execute a js block in the event of failure, you could just do it the same way as for the other formats.